Graduated mechanic&#39;s gage



U. I. T. BLOMBERG.

GRADUATED .MECHANICS GAGE.

APPLICATION FILED JUNE 9, 1919.

1,334,217. Patented Mar. 16, 1920.

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ULRIK I. '1. BLOMBERG, 0F CHICAGO, ILLINOIS.

GRADUATEDIvIECIIANICS GAGE.

Application filed .Tune 9, 1919. Serial No. 302,636.

To all whom it may concern:

Be it known that I, ULRIK I. T. BLoM- nsnc, a subject of the King of Sweden, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Graduated Mechanics Gages, of which the following is a specification.

My invention relates to gages and has particular reference toimprovements in combination squares and height gages. The objects of the invention are to provide an eye, time and labor saving attachment for combination squares, rules and the like; a simplified and improved height gage, and to provide what I term a universal attachment for graduated scales, whereby any graduation thereon may be quickly and correctly located automatically. With these objects in view my invention consists in the novel construction, combination and arrangement of parts hereinafter described in detail, illustrated in the accompanying drawing, and more particularly pointed out in the appended claims.

In the drawing- Figure 1 is a side elevation of a well known form of vcombination square, partly broken away, with my improvement applied thereto.

Fig. 2 is a view of the opposite side of my attachment with a broken away portion of the rule or blade.

Fig. 3 is a section taken substantially on the line 33 of Fig. 2.

In the drawing 2 represents a well known form of combination and try-square having a head or base with angularly related sides and a blade or rule 3 with any of the usual indented graduations 4. The prevailing forms of height, depth and like gages have various forms of slides to be adjusted at any of these graduations with the aid of accurate visual observations, which involves considerable eye strain, loss of time and numerous mistakes. The mechanic must ordinarily have recourse to such visual aids as magnifying glasses. The present invention relieves the operator from these strains and loss of time by an automatic self-locating mechanism, which is provided with an improved slide 5. In the present embodiment of my invention this slide is also equipped to take the place of the well known combinationof Specification of Letters Patent. Pa,tentd Liar, 16 1920,

two connected and relatively adjustable slides on height gages, one slide 'being an anchor while the other is adjusted by means of a micrometer screw. In the present improvement the slide 5 is provided with a micrometer head 6 and a scriber, marker or pointer 7 that is longitudinally,adjustable and mounted in a slot,-g-roove0r channel 8 formed in a small slide block 9 in which is a threaded bore 10 that is engaged by a set-screw 11 which holds-the memberg7-= againstbaccidental movement. The slide'li is of light or open construction-and has the usual slot therethrough for the blade or rule 3. Through the slide. 5, at right angles to the blade, is an opening 12 through which; both sides of the blade are'visible opposite said opening, The slide 5 also has the usual I. thumb screw 13 which is caused to -bear 7 against the edge ot the blade to hold it in an adjusted position. The end of the slide opposite to that in which said thumb screw is mounted is'bifurcated to provide in simplified form a pair of bearin'garms 14 and 15 to which are secured in any usual manner a pair of guide rods 16 and 17 which are slidably engaged in bores 18 and 19 through the slide block 9. In the latter is a threaded bore 20 for a micrometer screw 21 the lower end of which has its bearing in the arm 15 and is held against longitudinal movement by a knurled head 22 on one side of the arm 14 and a collar 23 secured to the screw at the opposite side of said arm. The slide 5-carries a click, pawl or stop device engageable with any of the indented notches or graduations 4. In the present construction this top device is in the form of a simple spring 24 having one end thereof secured by a screw 25 to a threaded hole 26 in the side of the slide 5. The opposite end of said spring is bent at right angles to provide a lug 27 which terminates in a V-shaped edge 28 to be engaged with any of the graduations 4 and hold the slide against accidental movement relative to the blade and in exact adjustment until the thumb screw 13 is tightened. An opening 29 is made in the bore 32in the slide 5 and secured to the springg lsmaygbe provided' with slight a ddi tional expense."

On the slide 5 adjacent to the mi lOinQiQ-l' screw is shown securedby 'scre\\-s33"and 3% a plate 35 having usual micrometer grade-mv tions 33 thereon opposite which-a inark' or graduation 37 on the face of the block 9 inay' be minutely adjusted by the micrometer screw.

In the present construction and arrange- -ment-=the-. slide-i block 9 operated-why the micrometer screvwhas the same range-of ads justinent that the additional slide-has .011 height: gages heretofore provided, and the single fslideihas a larger range of, movement alongrthe blade or rule than several-slides connected-by E a micrometer; screw which,

necessarily, takevup considerable space along: the blade. Henceia shorter blade With-I116 present improvement will have 1 116 8111110 1'ange;-;as=, a blade 1O1l0nger length BhCUIiF bered, iwithl several! slides. he -.weight: iof the instrument is: also reduced and i inthe tool box saived.; f

Themanual; adjustment of the" anchor slide,- which in the present case is thesin-gle. slide.:5,- is the more difiicult parttof the adjustmentof a heightgage, as thei'vclose-iac justment. must be made rWithoutwthewaid .of:

a screw and accurate eyesight Where no auto: JHfitlC stop =1s ,EpIOVIdGd. My attaehnientis serviceable ;,onany-gage'having, a-zblade wit-hw indented gradu ations; .including try-squares;r 35 cnmbinatmnsquares, height and depth gages, surface gages, calipe s mels gear-teeth thread t vernier or other readings Havingthus described mv invention, I

etcwith claim a's'new and dsi-rieto secure by Letters Patent V I 1- The combinatiiiin with a gage having a head or base and a blade with depressed graduations' thereon, of a slide havingclampmgagneansthereon, a click or dog on said slide adapted to yieldingly engage any U1:- said graduations and hold the slide in an dj t d position a :l'llOViLblQ bearing ii-{Q211- her n iounted i u! said slide; :a scriber mounted onisaidunemher for. adjustment ina direcslideblock having-.1 slide hearings;- in said slide, and a mierometer screw also having beariixgsin said-slide and connected with a threaded bore in said slide'blocki-l I111! testimony whereof I h-zwe: hereunto signed myname.-

i'J'LRIK 1. .T. BLOMBEBG. 

